122207643 has 8 divisors (see below), whose sum is σ = 181048400. Its totient is φ = 81471744.

The previous prime is 122207641. The next prime is 122207647. The reversal of 122207643 is 346702221.

122207643 is a `hidden beast` number, since 12 + 2 + 2 + 0 + 7 + 643 = 666.

It is not a de Polignac number, because 122207643 - 2¹ = 122207641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4526209 = 122207643 / (1 + 2 + 2 + 2 + 0 + 7 + 6 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122207641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2263078 + ... + 2263131.

It is an arithmetic number, because the mean of its divisors is an integer number (22631050).

Almost surely, 2^122207643 is an apocalyptic number.

122207643 is a deficient number, since it is larger than the sum of its proper divisors (58840757).

122207643 is an equidigital number, since it uses as much as digits as its factorization.

122207643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4526218 (or 4526212 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 122207643 is about 11054.7565780527. The cubic root of 122207643 is about 496.2487844785.

Adding to 122207643 its reverse (346702221), we get a palindrome (468909864).

The spelling of 122207643 in words is "one hundred twenty-two million, two hundred seven thousand, six hundred forty-three".